Re: [kvm-unit-tests PATCH v1 4/4] s390x: add selftest for migration

[Claudio Imbrenda <imbrenda@linux.ibm.com>]

On Tue, 12 Apr 2022 13:49:21 +0200
Nico Boehr <nrb@linux.ibm.com> wrote:

> On Mon, 2022-04-11 at 14:49 +0200, Claudio Imbrenda wrote:
> [...]
> > > diff --git a/s390x/selftest-migration.c b/s390x/selftest-
> > > migration.c  
> [...]
> > > +int main(void)
> > > +{
> > > +       /* don't say migrate here otherwise we will migrate right
> > > away */
> > > +       report_prefix_push("selftest migration");
> > > +
> > > +       /* ask migrate_cmd to migrate (it listens for 'migrate') */
> > > +       puts("Please migrate me\n");
> > > +
> > > +       /* wait for migration to finish, we will read a newline */
> > > +       (void)getchar();  
> > 
> > how hard would it be to actually check that you got the newline?  
> 
> It would be simple. I decided for ignoring what we actually read
> because that's what ARM and PPC do.

oh, then it's fine as it is

> 
> But I am also OK checking we really read a newline. What would you
> suggest to do if we read something that's not a newline? Read again
> until we actually do get a newline?

I was more thinking that it's a failure, but see the comment above